The number of Americans who live in a household with at least one gun is lower than it’s ever been, according to a major American trend survey that finds the decline in gun ownership is paralleled by a reduction in the number of Americans who hunt. According to the latest General Social Survey, 32 percent of Americans either own a firearm themselves or live with someone who does, which ties a record low set in 2010. That’s a significant decline since the late 1970s and early 1980s, when about half of Americans told researchers there was a gun in their...